(Table 4) Distribution of calcareous nannofossils at ODP Site 189-1172, East ...
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Magnification of 1000 X. Abundance of nannofossil taxa: V = very abundant more than 10 specimens per field of view, A = abundant 1-10 specimens per field of view, C = common 1...
放大倍数为1000倍。超微化石类群（nannofossil taxa）的丰度分级标准如下：V代表非常丰富，即每视野内标本数超过10个；A代表丰富，即每视野内标本数为1-10个；C代表常见，即1……
